A social networking portal experiences latency and throughput issues due to an increased number of users.
Application servers use very large datasets from an Amazon RDS database, which creates a performance
bottleneck on the database.
Which AWS service should be used to improve performance?

• A.Amazon SQS
• B.Auto Scaling
• C.ELB Application Load Balancer
• D.Amazon ElastiCache

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Two teams are working together on different portions of an architecture and are using AWS CloudFormation to manage their resources. One team administers operating system-level updates and patches, while the other team manages application-level dependencies and updates. The Application team must take the most recent AMI when creating new instances and deploying the application.
What is the MOST scalable method for linking these two teams and processes?

• A.The Operating System team uses CloudFormation to create new versions of their AMIs and lists the Amazon Resource Names (ARNs) of the AMIs in an encrypted Amazon S3 object as part of the stack output section. The Application team uses a cross-stack reference to load the encrypted S3 object and obtain the most recent AMI ARNs.
• B.The Operating System team uses CloudFormation stack to create an AWS CodePipeline pipeline that builds new AMIs, then places the latest AMI ARNs in an encrypted Amazon S3 object as part of the pipeline output. The Application team uses a cross-stack reference within their own CloudFormation template to get that S3 object location and obtain the most recent AMI ARNs to use when deploying their application.
• C.The Operating System team uses CloudFormation stack to create an AWS CodePipeline pipeline that builds new AMIs. The team then places the AMI ARNs as parameters in AWS Systems Manager Parameter Store as part of the pipeline output. The Application team specifies a parameter of type SSMin their CloudFormation stack to obtain the most recent AMI ARN from the Parameter Store.
• D.The Operating System team maintains a nested stack that includes both the operating system and Application team templates. The Operating System team uses a stack update to deploy updates to the application stack whenever the Application team changes the application code.

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You would like to run automated, continuous application level integration tests on all members of an Auto Scaling group. Which two options should you use?
Choose 2 answers.

• A.Use the AWS SDK to run the DescribeInstances API call on the Auto Scaling group, and then iterate over the members and remotely connect to each Amazon EC2 instance and run the integration tests.
• B.Using an Auto Cycle Group lifecycle policy, define a scheduled task to run integration tests when a new Amazon EC2 instance enters the InService state.
• C.Set up a custom CloudWatch metric with the output of your integration tests that are run by a scheduled process on each instance, and then set up a CloudWatch alert for any failures.
• D.Set up a custom CloudWatch metric that uses the output of the DescribeAutoScalingInstances API call to determine the HealthCheck status of the Amazon EC2 instances.
• E.Using the Auto Cycle Group lifecycle policy, define a scheduled task to run integration tests on individual instances using the Amazon EC2 user data to export test data to CloudWatch Logs.
• F.Use the AWS SDK to run the DescribeAutoScalinglnstances API call on the Auto Scaling Group, iterate over the members using the Describe Instances API call, remotely connect to each Amazon EC2 instance, and then run the integration tests.

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You are a Devops Engineer for your company. You are responsible for creating Cloudformation templates for your company. There is a requirement to ensure that an S3 bucket is created for all resources in development for logging purposes. How would you achieve this?

• A.Createseparate Cloudformation templates for Development and production.
• B.Createa parameter in the Cloudformation template and then use the Condition clause inthe template to create an S3 bucket if the parameter has a value of development
• C.Createan S3 bucket from before and then just provide access based on the tag valuementioned in the Cloudformation template
• D.Usethe metadata section in the Cloudformation template to decide on whether tocreate the S3 bucket or not.

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A DevOps team needs to query information in application logs that are generated by an application running multiple Amazon EC2 instances deployed with AWS Elastic Beanstalk.
Instance log streaming to Amazon CloudWatch Logs was enabled on Elastic Beanstalk.
Which approach would be the MOST cost-efficient?

• A.Use a CloudWatch Logs subscription to send the log data to an Amazon Kinesis Data Firehose stream that has an Amazon S3 bucket destination. Use Amazon Athena to query the log data from the bucket.
• B.Use a CloudWatch Logs subscription to send the log data to an Amazon Kinesis Data Firehose stream that has an Amazon S3 bucket destination. Use a new Amazon Redshift cluster and Amazon Redshift Spectrum to query the log data from the bucket.
• C.Use a CloudWatch Logs subscription to trigger an AWS Lambda function to send the log data to an Amazon Kinesis Data Firehose stream that has an Amazon S3 bucket destination. Use a new Amazon Redshift cluster and Amazon Redshift Spectrum to query the log data from the bucket.
• D.Use a CloudWatch Logs subscription to trigger an AWS Lambda function to send the log data to an Amazon Kinesis Data Firehose stream that has an Amazon S3 bucket destination. Use Amazon Athena to query the log data from the bucket.

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